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  2. Rack unit - Wikipedia

    en.wikipedia.org/wiki/Rack_unit

    Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...

  3. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    1:128: 3 ⁄ 32 in: 2.381 mm A few rockets and some fit-in-the-box aircraft are made to this size. 1:120: 0.1 in: 2.54 mm: Model railways (TT) Derived from the scale of 1 inch equals 10 feet.TT model railroad scale. Used in AD&D Battlesystem Skirmishes rules. Works with 15 mm miniatures where a 6 foot man would equal 15.24 mm 1:110: 2.771 mm

  4. Image sensor format - Wikipedia

    en.wikipedia.org/wiki/Image_sensor_format

    In digital photography, the image sensor format is the shape and size of the image sensor . The image sensor format of a digital camera determines the angle of view of a particular lens when used with a particular sensor. Because the image sensors in many digital cameras are smaller than the 24 mm × 36 mm image area of full-frame 35 mm cameras ...

  5. Board foot - Wikipedia

    en.wikipedia.org/wiki/Board_foot

    1⁄12 ft 3. The board foot or board-foot is a unit of measurement for the volume of lumber in the United States and Canada. It equals the volume of a board that is one-foot (305 mm) in length, one-foot (305 mm) in width, and one-inch (25.4 mm) in thickness. Board foot can be abbreviated as FBM (for "foot, board measure"), BDFT, or BF.

  6. American football field - Wikipedia

    en.wikipedia.org/wiki/American_football_field

    The rectangular field of play used for American football games measures 100 yards (91.44 m) long between the goal lines, and 160 feet (48.8 m) (53.3 yards) wide. The field may be made of grass or artificial turf. In addition, there are end zones extending another 10 yards (9.144 m) past the goal lines to the "end lines", for a total length of ...

  7. Biblical and Talmudic units of measurement - Wikipedia

    en.wikipedia.org/wiki/Biblical_and_Talmudic...

    From these figures for the size of a Biblical ell, that of the basic unit — the finger-breadth ( Etzba) — can be calculated to be either 2.1 or 2.2 cm (0.83 or 0.87 in); Rav Avraham Chaim Naeh approximates at 2 cm (0.79 in); Talmudic scholar Chazon Ish at 2.38 cm (0.94 in). The mile ( Mil) is thus about 963 or 1146 meters (3160 or 3760 ft ...

  8. 1:18 scale - Wikipedia

    en.wikipedia.org/wiki/1:18_scale

    1:18 scale. 1:18 scale is a traditional scale (ratio) for models and miniatures, in which 18 units (such as inches or centimeters) on the original is represented by one unit on the model. Depending on application, the scale is also called two third inch scale since 1 foot is represented by 2/3 of an inch. [ 1] The scale is used for 1:18 scale ...

  9. 1:32 scale - Wikipedia

    en.wikipedia.org/wiki/1:32_scale

    1:32 scale is a traditional scale for models and miniatures, in which one unit (such as an inch or a centimeter) on the model represents 32 units on the actual object. It is also known as "three-eighths scale", since 3 ⁄ 8 inch represents a foot. A 6 ft (183 cm) tall person is modeled as 2 + 1 ⁄ 4 in (57 mm) tall in 1:32 scale.